Q Herculis

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q Herculis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Hercules[1][2][failed verification]
Right ascension 16h 11m 28.7s[1][2]
Declination +16° 39′ 56″[1][2]
Apparent magnitude (V) 6.08[1][2]
Characteristics
Evolutionary stage main sequence[3]
Spectral type A0V[1][2]
U−B color index 0[1][2]
B−V color index 0.02[1][2]
Astrometry
Parallax (π)8.6995±0.0353 mas[4][failed verification]
Distance375 ± 2 ly
(114.9 ± 0.5 pc)
Other designations
q Her, 48 Serpentis, BD+17 2982, SAO 101994, HD 145647, HR 6035
Database references
SIMBADdata

q Herculis (48 Serpentis) is a double star in the constellation Hercules that is situated at a distance of approximately 439.95 light-years from the the Sun. It's apparent magnitude is +6.081.[4][failed verification] The age of q Herculis is determined to be about 719 million years.[citation needed]

The largest star q Herculis is a white star of the spectral type A0V[4], or A0. It has a mass of approximately 2.999 M☉, a radius of approximately 2.592 R☉,[citation needed] and a luminosity of approximately 52.481 L☉. Its effective temperature is approximately 9882 K[4].

Nomenclature

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q Herculis is this double star's Bayer designation. It was once considered to be in the Serpens, where it got its Flamsteed designation 48 Serpentis.[5]

References

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  1. ^ a b c d e f g "q Herculis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-10-17.
  2. ^ a b c d e f g "VizieR Detailed Page". Archived from the original on 2016-03-04. Retrieved 2012-07-13.
  3. ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  4. ^ a b c d "TheSkyLive – HR 6035". Retrieved 2025-10-17.
  5. ^ Wagman, M. (August 1987), "Flamsteed's Missing Stars", Journal for the History of Astronomy, 18 (3): 209–223, Bibcode:1987JHA....18..209W, doi:10.1177/002182868701800305, S2CID 118445625.


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